2010 Lexus GS450h maintenance

TABLE OF CONTENTS
1
GS_HV_U (OM30C81U)
January 28, 2010 8:25 am
1Before drivingAdjusting and operating features such as door locks, mir-
rors, and steering column
2When drivingDriving, stopping and safe-driving information
3Interior featuresAir conditioning and audio systems, as well as other interior
features for a comfortable driving experience
4Maintenance
and careCleaning and protecting your vehicle, performing do-it-your-
self maintenance, and maintenance information
5When trouble
arisesWhat to do if the vehicle needs to be towed, gets a flat tire,
or is involved in an accident
6Vehicle 
specificationsDetailed vehicle information
7For ownersReporting safety defects for US owners and seat belt in-
structions for Canadian owners
IndexAlphabetical listing of information contained in this manual

1
2
3
4
5
6
7
5
GS_HV_U (OM30C81U)
February 1, 2010 10:54 am
4-1. Maintenance and care
Cleaning and protecting 
the vehicle exterior................... 442
Cleaning and protecting 
the vehicle interior .................... 445
4-2. Maintenance
Maintenance requirements ..... 448
General maintenance ............... 450
Emission inspection and 
maintenance (I/M) 
programs ...................................... 4534-3. Do-it-yourself maintenance
Do-it-yourself service 
precautions .................................. 454
Hood ................................................. 457
Positioning a floor jack.............. 458
Engine compartment.................. 460
Tires ................................................... 475
Tire inflation pressure................ 485
Wheels ............................................ 489
Air conditioning filter................... 491
Electronic key battery ................ 494
Checking and replacing 
fuses ................................................ 496
Headlight aim ................................... 511
Light bulbs ........................................ 514
5-1. Essential information
Emergency flashers .................... 522
If your vehicle needs to be 
towed ............................................. 523
If you think something is 
wrong .............................................. 531
Event data recorder.................... 532
4Maintenance and care
5When trouble arises

TABLE OF CONTENTSIndex
6
GS_HV_U (OM30C81U)
February 1, 2010 10:54 am
5-2. Steps to take in an emergency
If a warning light turns 
on or a warning buzzer 
sounds... ......................................... 534
If a warning message is 
displayed ....................................... 543
If you have a flat tire (Vehicles 
with standard tires) .................. 560
If you have a flat tire (Vehicles 
with run-flat tires) ...................... 570
If the hybrid system will not 
start ................................................. 572
If the shift lever cannot be shifted 
from “P” ......................................... 573
If you lose your keys .................... 574
If the electronic key does not 
operate properly ....................... 575
If the 12 volt battery is 
discharged ................................... 578
If your vehicle overheats ............ 581
If the vehicle becomes 
stuck............................................... 584
If your vehicle has to be stopped 
in an emergency ....................... 5866-1. Specifications
Maintenance data 
(fuel, oil level, etc.).................... 588
Fuel information ........................... 598
Tire information.............................. 601
6-2. Customization
Customizable features................ 615
6-3. Initialization
Items to initialize ............................ 621
Reporting safety defects 
for U.S. owners........................... 624
Seat belt instructions 
for Canadian owners 
(in French) .................................... 625
Abbreviation list........................ 628
Alphabetical index ................... 630
What to do if... ............................ 640
6Vehicle specifications
7For owners
Index

27
1-1. Hybrid system
1
Before driving
GS_HV_U (OM30C81U)
February 12, 2010 8:52 am
■After the 12 volt battery has discharged or has been changed or removed
The gasoline engine may not stop even if the vehicle is running on the hybrid battery
(traction battery). If this continues for a few days, contact your Lexus dealer.
■Sounds and vibrations specific to a hybrid vehicle
There may be no engine sounds or vibration even though the vehicle is able to
move. Always put the shift lever in “P” when parked.
The following sounds or vibrations may occur when the hybrid system is operating,
and are not a malfunction.
●Motor sounds may be heard from the engine compartment.
●Sounds may be heard from the hybrid battery (traction battery) behind the rear
seat when the hybrid system starts or stops.
●Sounds from the hybrid system may be heard when the trunk lid is open.
●Sounds may be heard from the transmission when the hybrid system starts or
stops.
●Engine sounds may be heard when accelerating sharply.
●Sounds may be heard from the regenerative brake when you press the brake
pedal.
●Vibration may be felt when the gasoline engine starts or stops.
●You may hear cooling fan sounds coming from the air intake vents behind the
rear seat.
■Maintenance, repair, recycling, and disposal
Contact your Lexus dealer regarding maintenance, repair, recycling and disposal.
Do not dispose of the vehicle yourself.

99
1
Before driving
GS_HV_U (OM30C81U)
January 28, 2010 10:09 am
1-7. Theft deterrent system
Immobilizer system
■System maintenance
The vehicle has a maintenance-free type immobilizer system.
■Conditions that may cause the system to malfunction
●If the grip portion of the key is in contact with a metallic object.
●If the key is in close proximity to or touching a key to the security system (key
with a built-in transponder chip) of another vehicle.
The vehicle’s keys have built-in transponder chips that prevent the hybrid
system from starting if the key has not been previously registered in the
vehicle’s on-board computer.
Never leave the keys inside the vehicle when you leave the vehicle.
The indicator light flashes after
the “POWER” switch has been
turned OFF to indicate that the
system is operating.
The indicator light stops flashing
after the “POWER” switch has
been turned to ACCESSORY
or ON mode to indicate that the
system has been canceled.

102
1-7. Theft deterrent system
GS_HV_U (OM30C81U)
January 28, 2010 10:09 am
■System maintenance
The vehicle has a maintenance-free type alarm system.
■Items to check before locking the vehicle
To prevent unexpected triggering of the alarm and vehicle theft, make sure of the
following:
●Nobody is in the vehicle.
●The windows and moon roof are closed before the alarm is set.
●No valuables or other personal items are left in the vehicle.
■Tr i g g e r i n g o f t h e a l a r m
The alarm may be triggered in the following situations.
(Stopping the alarm deactivates the alarm system.)
●A person inside the vehicle opens a door,
the trunk or hood.
●The 12 volt battery is recharged or
replaced when the vehicle is locked.

251
3-1. Using the touch screen
3
Interior features
GS_HV_U (OM30C81U)
January 28, 2010 10:42 am
■Delete personal data
Touch “Delete Personal Data” on the “General Settings” screen.
Touch “Delete”.
Check carefully beforehand, as
data cannot be retrieved once
deleted.
A confirmation screen will be displayed. Touch “Yes”.
The following personal data can be deleted or turned to their default settings:
• Radio preset stations
• Phonebook data
• Call history data
• Speed dial data
• Voice tag data
•Bluetooth
® phone data
•Volume setting
• Details setting
• Maintenance conditions
*
• Maintenance information “off” setting*
• Address book*
•Areas to avoid*
•Previous points*
• Route guidance*
• Route trace*
*
: If the navigation system is equipped
STEP1
STEP2
STEP3

Maintenance and care4
441
GS_HV_U (OM30C81U)
January 28, 2010 11:30 am
4-1. Maintenance and care
Cleaning and protecting 
the vehicle exterior............. 442
Cleaning and protecting 
the vehicle interior .............. 4454-2. Maintenance
Maintenance 
requirements........................ 448
General maintenance .......... 450
Emission inspection and 
maintenance (I/M) 
programs ............................... 453
4-3. Do-it-yourself maintenance
Do-it-yourself service 
precautions ........................... 454
Hood ........................................... 457
Positioning a floor jack ......... 458
Engine compartment ........... 460
Tires............................................. 475
Tire inflation pressure........... 485
Wheels ...................................... 489
Air conditioning filter ............ 491
Electronic key battery.......... 494
Checking and replacing 
fuses ........................................ 496
Headlight aim ........................... 511
Light bulbs ................................. 514